I have been having abdominal pain left side under my ribs, my period has not stopped in over a month when the abdominal pain started, it's a sharp pain that hurts worse after I eat. and I am having really bad nausea.
Assuming you are not sexually active, you should see your pediatrician or family doctor. If you are sexually active, you should see an OB/GYN.
William Z. Cohen, M.D., FAAFP